<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
       <button>发送ajax</button>
</body>
</html>
<script src="./lib/jquery-3.1.0.min.js"></script>
<script>
        $('button').click(()=>{
            $.ajax({
                type:"get",
                url:"http://127.0.0.1:4000/student/getstudent",
                dataType:"json",
                success:(data)=>{
                    console.log(data);
                }
            })
        })

</script>